在 h1 中居中 div

Question

我正在尝试为 freecodecamp 创建一个作品集，但是我找不到如何将按钮居中，或者 div 在页面上标记为 "row"。我需要 div 行，因为我稍后会添加更多按钮，但现在我只需要 FCC 按钮。到目前为止，以下是我网站的 html 和 css 文件。欢迎任何帮助！

HTML:

<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.1.0/css/font-awesome.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<link rel="stylesheet" href="css/style.css">

<!-- Web page starts here -->
<body id="body">
  <section id="land">
      <h1 id="mpp" class="text-center"> My Personal Portfolio </h1>
        <div class="row" id="btnrow">
          <a href="http://www.freecodecamp.com/zacmelendez" class="btn responsive" id="fcc"><i class="fa fa-file-code-o"> Free Code Camp</i></a>
        </div>
  </section>
  <section id="intro">
  </section>
</body>

CSS:

#body {
  height: 100vh;
  width: 100%;
}

#mpp {
  font-family: Monospace;
  font-size: 50px;
  color: white;
  padding-top: 15%;
  margin: 0;
}
#land {
  background: url(http://img.hrhwalls.com/images2/ki13j11c4ef.jpg);
  width: 100%;
  height: 100vh;
}
#fcc {
  background-color: #016403;
  text-decoration: none;
  color: #FFFFFF;
  font-size: 17px;
  position: inherit;
}
#btnrow {
  right: 50%;
}

Answer 1

#btnrow {
  display: flex;
  justify-content: center;
}

应该可以解决问题。请参阅下面的工作示例

#body {
  height: 100vh;
  width: 100%;
}

#mpp {
  font-family: Monospace;
  font-size: 50px;
  color: white;
  padding-top: 15%;
  margin: 0;
}
#land {
  background: url(http://img.hrhwalls.com/images2/ki13j11c4ef.jpg);
  width: 100%;
  height: 100vh;
}
#fcc {
  background-color: #016403;
  text-decoration: none;
  color: #FFFFFF;
  font-size: 17px;
  position: inherit;
}
#btnrow {
  display: flex;
  justify-content: center;
}

<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.1.0/css/font-awesome.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<link rel="stylesheet" href="css/style.css">

<!-- Web page starts here -->
<body id="body">
  <section id="land">
      <h1 id="mpp" class="text-center"> My Personal Portfolio </h1>
        <div class="row" id="btnrow">
          <a href="http://www.freecodecamp.com/zacmelendez" class="btn responsive" id="fcc"><i class="fa fa-file-code-o"> Free Code Camp</i></a>
        </div>
  </section>
  <section id="intro">
  </section>
</body>

Answer 2

您可以给 div 一个宽度，并为左右值使用 margin auto，这将使元素水平居中。

.row {
    margin: 0 auto;
    width: 150px; /*or any measurement*/
}

在 h1 中居中 div

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